High blood pressure itself usually causes no symptoms, so it is easy to ignore. Left untreated, however, it can quietly damage your body for years. Eventually, it can lead to serious complications, such as heart attack, heart failure, stroke, kidn...

Being tired is the familiar aftermath of physical exertion, prolonged labor or lack of sleep. When does being tired become a symptom of a condition? Fatigue, malaise, lassitude, exhaustion are all subtle variations of the same subjective feelings of not having enough energy to meet the demands of one's life.

Weakness is the feeling of body fatigue, or tiredness. A person experiencing weakness may not be able to move a certain part of their body properly. They may also experience tremors, which are uncontrollable movements, or twitches in the area of w...

Yawning is a mostly involuntary process of opening the mouth and breathing in deeply, filling the lungs with air. It is a very natural response to being tired. In fact, yawning is usually triggered by sleepiness or fatigue. Some yawns are short, a...